› Pro-line Back-half Cage

Pro-line gives you the truggy op­tion for any scaler

RC Car Action - - CONTENTS -

When it comes to scale trucks, full-fend­ered rigs are the norm, but there’s some­thing re­ally cool about the look of a truck with a tubu­lar back half and ex­posed sus­pen­sion. So why don’t we see more of them on the trail? It used to be, to get the look, you ei­ther had to make your own by weld­ing or braz­ing some tub­ing to­gether or buy a back-half cage, but there were only two to choose from and they were specif­i­cally made for the ve­hi­cle they came from. The gang at Pro­line has just in­tro­duced a back-half cage that is de­signed for a univer­sal fit, so you can com­bine it with any of their cab-only bod­ies and eas­ily fit it on vir­tu­ally any chas­sis. Sound good? It did to me too, and that’s why I picked one up for my project Traxxas TRX-4. Let’s see what this cage is all about.


The cage uses a five-piece molded-plas­tic de­sign to get the look down, and you have to as­sem­ble it. Pro-line throws in all the nec­es­sary hard­ware to make that hap­pen; you even get the screws and wash­ers to at­tach the cage to the body. The cage it­self has a great scale truggy look, which is en­hanced by a mold­ed­plas­tic plate that sits on the mid­dle level. The plate is held in place by sev­eral small screws, and it fea­tures a molded-in fuel cell that fur­ther en­hances the look of the cage and pro­vides a place for the truck’s body mounts. There’s a mount for a spare tire, and the height of the screw and its plas­tic stand­off is ad­justable, so you can fine-tune it to the tire of your choice. Not run­ning a spare tire? Then you can use that spot to mount an­other scale ac­ces­sory or just leave it empty. Pro-line also sup­plies a bracket to mount ac­ces­sories like shov­els and jacks be­hind the cab. The nice thing about the way it’s de­signed is that it’s just as easy to leave it off or make your own plate to se­cure some­thing else in that spot.


Pro-line doesn’t in­clude assem­bly in­struc­tions, so you have to fig­ure out how to put it to­gether your­self. Pro-line does, how­ever, pro­vide ex­ploded views along with some photos of the as­sem­bled cage to help you along. Once I wrapped my head around the parts and screws, the cage went to­gether with­out dif­fi­culty. One tip: Set the height of the spare tire be­fore com­plet­ing assem­bly and in­stal­la­tion of the cage be­cause you can’t ad­just it later (not with­out dis­as­sem­bly, that is). Af­ter test fit­ting the body and cab to get the height right, I re­moved the sec­tion of the cage that mounts to the cab and used it to mark the mount­ing-hole lo­ca­tions on the body. Af­ter in­stalling the cage onto the cab, I marked the lo­ca­tions for the rear body posts of my TRX-4 by dab­bing paint onto the posts and low­er­ing the body and cage into place. The posts left two per­fectly placed dots of paint, and I reamed holes in the soft plas­tic eas­ily.

I loaded my cage with Pro-line scale ac­ces­sories and a spare tire. The scale ac­ces­sories were easy to in­stall and the mount has a good grip on all the pieces, so there’s no need to worry about them slid­ing out.


On the trail, the cage looks equally good; af­ter some crashes, it was still in­tact and only had a few mi­nor scratches. The cage also gives you an­other spot to grab your truck, and I used it as a han­dle all day with­out it pulling away from the body or com­ing off the body mounts, prov­ing the strength of the ba­sic de­sign. In­stalling and re­mov­ing the spare tire was a bit of an is­sue due to the loose fit of the 3mm lock­nut. I had to keep pulling on it to keep the nut in the hex and spin­ning prop­erly, but a dab of CA glue to keep the nut in place was all that was needed to solve that prob­lem.


The Pro-line back-half cage is a nice piece, and it’s great that it’s a univer­sal fit and can eas­ily be mounted on any of to­day’s pop­u­lar scale rigs. I’d like to see some in­struc­tions in­cluded for the build; that would have saved me a lit­tle time, but in the end, the cou­ple of is­sues I ran into were mi­nor. If you make sure you dou­ble-check the lo­ca­tion of the mount­ing holes on your body be­fore you ream them and get the height of the spare tire right be­fore you as­sem­ble the cage, you can avoid them al­to­gether. Over­all, this is a great way to get that unique and scale truggy look for your scale rig.—kevin Het­man­ski

My Pro-line 66 Chevy cab looks so much bet­ter with the back-half cage in­stalled.

The Pro-line back-half cage comes out of the pack­age with all that you need to as­sem­ble the cage and mount it to the body.

Here’s the as­sem­bled cage be­fore I mounted it to the body and added scale ac­ces­sories. It looks great by it­self.

I used the cab sec­tion of the cage to mark the body for ream­ing, af­ter po­si­tion­ing the as­sem­bled cage and body on my chas­sis to make sure the holes go in the right lo­ca­tion.

The mount for the scale ac­ces­sories has a snug fit and does a great job of en­sur­ing they don’t slide out.

The spare-tire mount is ad­justable to make it pos­si­ble to at­tach var­i­ous sizes of tires. Make sure you set the height be­fore you as­sem­ble the rest of the cage.

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